As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PRIOR TO DEPARTURE AND WITH AIR CONDITIONING PACKS ON, THERE WAS A PRESENCE OF OILY SMOKE IN THE CABIN. MAINTENANCE CHECK FOUND FUEL LEAKING AT AUXILIARY POWER UNIT FUEL ATOMIZER. THE FUEL ATOMIZER ASSEMBLY AND SEAL WERE CHANGED AND LEAK CHECK CARRIED OUT.